Image 6:

1. Carotid canal, external opening
2. Clivus (occipital part)
3. Foramen ovale
4. Foramen lacerum
5. Foramen spinosum
6. Sphenoid bone, greater wing
7. Hypoglossal canal, left
8. Inferior orbital fissure
9. Jugular foramen
10. Occipital bone, squamous part
11. Occipitomastoid suture
12. Petrooccipital fissure
13. Petrosphenoidal fissure
14. Pterygoid canal
15. Pterygopalatine fossa
16. Sphenoid bone, body
17. Sphenopalatine foramen
18. Sphenosquamous suture
19. Temporal bone, petrous part
20. Temporal bone, squamous part
21. Temporal bone, tympanic part
22. Tympanomastoid fissure